Backcountry BGA Pines Microgrid Ultra-LT Baselayer Crew Top - Men's

Pines Microgrid Ultra-LT Crew delivers ultralight warmth and moisture control for high-output missions

What Our Gearhead® Experts Are Saying:

"I’ve worn the Pines Microgrid Ultra-LT Crew on big elevation days—trail running, touring, even under a shell for spring objectives. It’s crazy light, dries fast, and breathes way better than wool. The thumbholes and stretch fit make it perfect for layering without any bunching or riding up."

When we’re pushing hard in cold air at high elevations, the Backcountry Pines Microgrid Ultra-LT Baselayer Crew Top delivers the lightweight warmth and moisture control we need to stay focused. Athlete-inspired and mountain-tested, this next-to-skin layer balances breathable performance with a soft, streamlined feel that moves naturally with us through every stride and transition.

The partially recycled poly/spandex blend features a microgrid fleece back for low-bulk warmth and a smooth face for easy layering. Flatlock seams and raglan sleeves with integrated gussets eliminate chafing and allow full range of motion, while HeiQ Fresh FFL odor control keeps things fresh through multi-day missions. Whether we’re skinning toward a ridgeline or racing the sunset on a trail run, this crew keeps us warm, dry, and ready for the next move.

Details

Ultralight baselayer designed for any and all of our cold weather adventures
Microgrid fleece back traps warm air while releasing excess heat
Smooth face fabric layers easily under shells and insulation
Polyester and spandex blend offers stretch and thermoregulating performance
Next-to-skin fit with gusseted raglan sleeves for full mobility on the go
Flatlock seams prevent chafing during long, active days
Streamlined thumbholes help sleeves stay in place under layers
HeiQ Fresh odor control keeps fabric fresh through extended wear
Item #BCCZ375

Responsible Collection: Recycled/Repurposed
Material: 67% recycled polyester, 27% polyester, 6% spandexster, spandex)
Insulation Weight: ultralight (125gsm)
Fit: regular
High Point Shoulder: 27.5in
Style: crew
Hood: none
Thumbholes: yes
Anti-Odor: HeiQ Fresh FFL
Activity: skiing, snowboarding, snowshoeing, running, training, climbing
Manufacturer Warranty: limited lifetime

A man wears the Cedars RWS Merino Lightweight Baselayers

BGA

The Baselayer Collection

For Active Mountain Days

The Baselayer Collection

Pines Ultra-Light

For warmth without weight

Synthetic fabric built for snowy pursuits but versatile for all outdoors

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Cedars Light-Weight

For active mountain days

Soft, light merino long underwear for moisture management

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Cedars Mid-Weight

For the backcountry or skiing some trees

Mid-weight merino baselayer for warm, robust layers

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Meet Pines

Men's Balaclava Top

Women's Balaclava Top G2

Men's 1/2-Zip Top

Women's 1/2-Zip Top

Men's Crew Top

Women's Crew Top

Thoughtfully Designed

Ultralight Warmth

Microgrid fleece traps warm air while shedding excess heat for low-bulk insulation on cold mountain days.

Odor Control Technology

An HeiQ odor-fighting finish keeps your baselayer fresher through high-output efforts and repeated use.

Built-In Balaclava

A built-in balaclava and thumbholes offer full baselayer coverage on stormy days.

Chosen By The 2026 Jamaica Bobsleigh Team

For Long Days Outside

Designed to balance warmth, mobility, and durability, these layers are built for long days outside—before and after time on the ice, and wherever winter takes the team next.

Shop the Jamaica Bobsleigh Team Kit

Worn By Athletes

Worn by athletes and coaches from the Jamaican Bobsleigh and Skeleton Federation, this gear supports cold-weather training, travel, and recovery in demanding winter conditions.

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About The BGA Brand

In 1996, Backcountry's founders set out to make the backcountry more accessible. That same spirit drives BGA today. Built on decades of gear experience, BGA delivers the quality, design, and durability you need to get where you're going. Our goal is simple: build reliable, responsibly made gear for people who actually get out there. From weekend missions to dawn patrol sessions, every piece is designed to perform, last, and earn a permanent spot in your kit.

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Built By Gearheads

We live and breathe the outdoors, so every stitch of BGA gear is made with a mission in mind. Designed in Park City at the foot of Utah’s Wasatch mountains—and tested by our Gearhead® Experts who use it every day—BGA styles are built to perform wherever the snow lands, trail leads or adventure calls.